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发明名称
HELICALLY SEAMED CORRUGATED PIPE OF THIN SHEET METAL.
摘要
申请公布号
IE31213(L)
申请公布日期
1967.09.02
申请号
IE19670000227
申请日期
1967.03.02
申请人
WESTAFLEXWERK L. & F. WESTERBARKEY.
发明人
分类号
B21C37/12;F16L11/16;(IPC1-7):F16L11/16
主分类号
B21C37/12
代理机构
代理人
主权项
地址
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